We have a distributed BOXI environment. Our web server (Tomcat 5.5) is hosted on a Linux box and BOXI 3.1 SP3 application is hosted on Windows server 2008. The web server configuration details are as below. Web server (x86_64 GNU/Linux) CPU (1) - Intel(R) Xeon(R) CPU E7450 @ 2.40GHz Total Physical Memory - 1.83 GB Total Java Heap Memory - 1 GB The allocated total Java heap memory is 1 GB and the default garbage collector (Serial collector) is used. We are carrying out performance testing for this environment with with 15 users and 20 mins of steady state. The problem we are facing is when the testing is carried out the tenured heap memory is getting filled up in the middle and not freed by the major collection. This results in 404 error, while opening report in Infoview. Also the tomcat service crashes after sometime with out of memory error. We are not sure whether the existing memory sizing is correct. So please help us in getting this issue resolved. Thanks.